A distributed fiber optic vibration measurement device
By installing limit seats and fixing mechanisms on the pipeline, the signal capture problem caused by poor contact between the optical fiber and the pipeline was solved, achieving a tight fit between the optical fiber and the pipeline, improving the accuracy and real-time performance of monitoring data, and providing a reliable basis for fault early warning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 武汉鑫光传感科技有限公司
- Filing Date
- 2025-09-07
- Publication Date
- 2026-06-30
AI Technical Summary
In existing distributed fiber optic vibration monitoring devices for pipeline leak detection, vibration signals caused by poor contact between the fiber optic cable and the pipeline cannot be effectively captured, leading to missed or false alarms.
By installing a limiting seat and fixing mechanism at the top of the pipeline, the position of the optical fiber is constrained from multiple dimensions, including radial and axial directions. Anti-slip pressure strips are used to increase friction, ensuring that the optical fiber is tightly attached to the pipeline, preventing loosening, and enabling rapid signal transmission and accurate monitoring.
It significantly improves the accuracy of monitoring data, ensuring that even minor changes in pipeline vibration can be detected in a timely manner, and providing timely basis for real-time monitoring and fault early warning.
Smart Images
Figure CN224435563U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of distributed optical fiber vibration measurement devices, and specifically to a distributed optical fiber vibration measurement device. Background Technology
[0002] The core principle of the distributed optical fiber vibration measurement device is based on the Rayleigh scattering effect of optical fiber and phase-sensitive optical time-domain reflectometry (Φ-OTDR) technology. It achieves long-distance, high-precision, and real-time monitoring by detecting the deformation or optical signal changes caused by vibration of the optical fiber.
[0003] In existing distributed fiber optic vibration monitoring devices for pipeline leak detection, the vibration signals generated by the leak may not be effectively captured due to poor contact between the fiber optic cable and the pipeline, leading to missed or false alarms. Utility Model Content
[0004] This utility model addresses the technical problems existing in the prior art by providing a distributed optical fiber vibration measurement device, including a pipe, with two limiting seats fixedly installed on the top of the pipe;
[0005] An optical fiber is disposed between two limiting seats on the top side of the pipe, and the two limiting seats are used to limit the optical fiber.
[0006] A fixing mechanism is provided on the outside of the pipe, and the fixing mechanism is used to fix the optical fiber to the pipe.
[0007] The beneficial effects of this utility model are as follows: through the cooperation of the limiting seat and the fixing mechanism, the position of the optical fiber is constrained in multiple dimensions, including radial and axial directions. The anti-slip pressure strip increases friction to prevent the optical fiber from sliding and can flexibly adjust the tightness to ensure that the optical fiber is always in close contact with the pipeline, avoiding the distortion of monitoring signals caused by the loosening of the optical fiber, and significantly improving the accuracy of monitoring data. The close contact between the optical fiber and the pipeline ensures that the slight vibration changes of the pipeline can be detected in time. The optical signal is quickly transmitted to the monitoring host through the optical fiber to realize real-time monitoring of the pipeline status and provide timely basis for fault early warning and maintenance decision-making.
[0008] Preferably, one end of the optical fiber is connected to a signal acquisition unit inside the monitoring host, and the signal acquisition unit is connected to the monitoring host. When the pipeline vibrates, the tightly fitted optical fiber will generate corresponding changes in optical signals (such as light intensity, phase, wavelength, etc.) due to the slight changes in the pipeline. These changes are transmitted to the signal acquisition unit through the optical fiber, converted, and then transmitted to the monitoring host, ultimately realizing real-time monitoring of the pipeline status.
[0009] Preferably, the fixing mechanism includes a clamping shell, a fixing base, a first binding strap, and a second binding strap. The clamping shell is disposed on the top side of the optical fiber. The fixing base is fixedly connected to the top side of the clamping shell. The first binding strap is fixedly connected to the side surface of the fixing base, and the second binding strap is fixedly connected to the other side surface of the fixing base. The first binding strap and the second binding strap extend from both sides of the fixing base, pass through the limiting frame on the top side of the clamping shell, and wrap around the surface of the pipe. The male Velcro at the end of the first binding strap is bonded to the female Velcro at the end of the second binding strap. By tightening the binding straps, the two are tightly fitted to the surface of the pipe, pressing the clamping shell firmly against the optical fiber and the pipe to form a closed-loop fixation.
[0010] Preferably, the inner wall of the clamping shell is provided with multiple anti-slip strips, which are evenly distributed on the inner wall of the clamping shell and are in contact with the surface of the optical fiber. The pressure of the clamping shell on the optical fiber is transmitted to the optical fiber through the anti-slip strips, so that the optical fiber is tightly attached to the surface of the pipe, completely preventing the optical fiber from loosening or shifting.
[0011] Preferably, a plurality of limiting frames are fixedly connected to the top side surface of the clamping shell. The plurality of limiting frames are symmetrically distributed about the fixing base, and a first restraining strap and a second restraining strap pass through the inner cavity of the limiting frame. The limiting frames restrict the direction of the restraining straps to prevent deviation.
[0012] Preferably, a male Velcro fastener is provided on the outer surface of the first binding strap end, and a female Velcro fastener is installed on the inner side of the second binding strap end, with the male and female Velcro fasteners bonded together. The bonding of the male Velcro at the end of the first binding strap and the female Velcro at the end of the second binding strap allows the binding straps to be tightened, ensuring a tight fit against the pipe surface and pressing the clamping shell firmly against the optical fiber and the pipe, forming a closed-loop fixation.
[0013] Preferably, the first and second binding straps are attached to the surface of the conduit within the fixed optical fiber. This facilitates the securing of the optical fiber by the first and second binding straps.
[0014] Preferably, the surface of the clamping shell has a plurality of through holes, which are evenly distributed on the surface of the clamping shell. The through holes on the surface of the clamping shell can reduce the overall weight.
[0015] Preferably, limiting plates are fixedly connected to the bottom sides of opposite ends of the clamping shell, and limiting plates are equidistantly installed on the bottom side of the same end of the clamping shell. The bottom end of the limiting plate engages with a slot formed on the surface of the limiting seat. The limiting plates on the bottom sides of both ends of the clamping shell are inserted into the slots on the surface of the limiting seat and engage: limiting the position of the clamping shell itself, preventing it from shifting relative to the limiting seat (and the pipe), further fixing the axial position of the optical fiber, and ensuring the relative position stability of the optical fiber and the pipe.
[0016] Preferably, the bottom side of the optical fiber is attached to the top surface of the pipe, and limiting seats are symmetrically arranged on both sides of the optical fiber. This facilitates the limiting seats to limit the placement of the optical fiber. Attached Figure Description
[0017] Figure 1 This is a structural view of the front of the distributed optical fiber vibration measurement device of this utility model;
[0018] Figure 2 This utility model relates to a distributed optical fiber vibration measurement device. Figure 1 Enlarged view of the structure at point A in the middle;
[0019] Figure 3 This is a structural diagram of the left side of the distributed fiber optic vibration measurement device of this utility model;
[0020] Figure 4 This is a bottom view of the distributed optical fiber vibration measurement device of this utility model.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1. Pipeline; 2. Fixing mechanism; 21. First restraint belt; 22. Second restraint belt; 23. Fixing seat; 24. Pressing shell; 25. Through hole; 26. Limiting frame; 27. Anti-slip pressure strip; 3. Limiting seat; 31. Card slot; 4. Limiting plate; 5. Fiber optic cable; 6. Monitoring host. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.
[0026] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" other elements or features would be oriented "over" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.
[0027] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.
[0028] like Figure 1-3 As shown, this embodiment provides a distributed optical fiber vibration measurement device, including a pipe 1, an optical fiber 5, and a fixing mechanism 2. Two limiting seats 3 are fixedly installed on the top of the pipe 1.
[0029] The optical fiber 5 is positioned between two limiting seats 3 on the top side of the pipe 1, and the two limiting seats 3 are used to limit the optical fiber 5.
[0030] The fixing mechanism 2 is located on the outside of the pipe 1. The fixing mechanism 2 is used to fix the optical fiber 5 to the pipe 1.
[0031] With the cooperation of the limiting seat 3 and the fixing mechanism 2, the position of the optical fiber 5 is constrained in multiple dimensions, including radial and axial directions, to prevent the optical fiber 5 from sliding. The tightness can be flexibly adjusted to ensure that the optical fiber 5 is always in close contact with the pipe 1, avoiding the distortion of monitoring signals caused by the loosening of the optical fiber 5, and significantly improving the accuracy of monitoring data. The close contact between the optical fiber 5 and the pipe 1 ensures that the slight vibration changes of the pipe 1 can be detected in time. The optical signal is quickly transmitted to the monitoring host 6 through the optical fiber 5 to realize real-time monitoring of the status of the pipe 1, providing timely basis for fault early warning and maintenance decisions.
[0032] Preferably, one end of the optical fiber 5 is connected to a signal acquisition unit inside the monitoring host 6, and the signal acquisition unit is connected to the monitoring host 6. When the pipeline 1 vibrates, the tightly fitted optical fiber 5 will generate corresponding changes in optical signals (such as light intensity, phase, wavelength, etc.) due to the slight changes in the pipeline 1. These changes are transmitted to the signal acquisition unit through the optical fiber 5, and after conversion, they are transmitted to the monitoring host 6, ultimately realizing real-time monitoring of the status of the pipeline 1.
[0033] like Figure 2-4 As shown, preferably, the fixing mechanism 2 includes a clamping shell 24, a fixing seat 23, a first binding strap 21, and a second binding strap 22. The clamping shell 24 is disposed on the top side of the optical fiber 5. The fixing seat 23 is fixedly connected to the top side of the clamping shell 24. The first binding strap 21 is fixedly connected to one side surface of the fixing seat 23, and the second binding strap 22 is fixedly connected to the other side surface of the fixing seat 23. The first binding strap 21 and the second binding strap 22 extend from both sides of the fixing seat 23, pass through the limiting frame 26 on the top side of the clamping shell 24, and wrap around the surface of the pipe 1. The male Velcro at the end of the first binding strap 21 is bonded to the female Velcro at the end of the second binding strap 22. By tightening the binding straps, the two are tightly fitted to the surface of the pipe 1, pressing the clamping shell 24 tightly against the optical fiber 5 and the pipe 1 to form a closed-loop fixation.
[0034] Preferably, the inner wall of the clamping shell 24 is provided with a plurality of anti-slip strips 27, which are evenly distributed on the inner wall of the clamping shell 24 and are in contact with the surface of the optical fiber 5. The pressure of the clamping shell 24 on the optical fiber 5 is transmitted to the optical fiber 5 through the anti-slip strips 27, so that the optical fiber 5 is tightly in contact with the surface of the pipe 1, and the loosening or displacement of the optical fiber 5 is completely prevented.
[0035] like Figure 2 As shown, preferably, a plurality of limiting frames 26 are fixedly connected to the top side surface of the clamping shell 24. The plurality of limiting frames 26 are symmetrically distributed about the fixing seat 23, and a first restraining strap 21 and a second restraining strap 22 pass through the inner cavity of the corresponding limiting frame 26. The limiting frames 26 restrict the direction of the restraining straps and prevent deviation.
[0036] Preferably, a male hook and loop fastener is provided on the outer surface of the end of the first binding strap 21, and a female hook and loop fastener is installed on the inner side of the end of the second binding strap 22. The male hook and loop fastener are bonded together. The male hook and loop fastener at the end of the first binding strap 21 and the female hook and loop fastener at the end of the second binding strap 22 are bonded together. By tightening the binding straps, the two are made to fit tightly against the surface of the pipe 1, and the clamping shell 24 is pressed tightly against the optical fiber 5 and the pipe 1 to form a closed-loop fixation.
[0037] Preferably, the first binding strap 21 and the second binding strap 22 are attached to the surface of the pipe 1 in fixing the optical fiber 5. This facilitates the first binding strap 21 and the second binding strap 22 in fixing the optical fiber 5.
[0038] Preferably, the surface of the clamping shell 24 has a plurality of through holes 25, which are evenly distributed on the surface of the clamping shell 24. The through holes 25 on the surface of the clamping shell 24 can reduce the overall weight.
[0039] Preferably, limiting plates 4 are fixedly connected to the bottom sides of opposite ends of the clamping shell 24, and the limiting plates 4 are equidistantly installed on the bottom sides of the same end of the clamping shell 24. The bottom ends of the limiting plates 4 are engaged with the slots 31 formed on the surface of the limiting seat 3. The limiting plates 4 on the bottom sides of both ends of the clamping shell 24 are inserted into the slots 31 on the surface of the limiting seat 3 and engaged: limiting the position of the clamping shell 24 itself, preventing it from shifting relative to the limiting seat 3 (and the pipe 1), further fixing the axial position of the optical fiber 5, and ensuring the relative position of the optical fiber 5 and the pipe 1 is stable.
[0040] Preferably, the bottom side of the optical fiber 5 is attached to the top surface of the pipe 1, and limiting seats 3 are symmetrically arranged on both sides of the optical fiber 5. This facilitates the limiting seats 3 to limit the placement of the optical fiber 5.
[0041] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.
Claims
1. A distributed fiber optic vibration sensing device, comprising: include: Pipe (1), with two limiting seats (3) fixedly installed on the top of the pipe (1); Optical fiber (5), the optical fiber (5) is disposed between two limiting seats (3) on the top side of the pipe (1), the two limiting seats (3) are used to limit the optical fiber (5); Fixing mechanism (2) is set outside the pipe (1) and is used to fix the optical fiber (5) to the pipe (1).
2. The distributed fiber optic vibration sensing apparatus of claim 1, wherein, The optical fiber (5) is connected at one end to a signal collector inside the monitoring host (6), and the signal collector is connected to the monitoring host (6).
3. The distributed fiber optic vibration sensing apparatus of claim 1, wherein, The fixing mechanism (2) includes a clamping shell (24), a fixing seat (23), a first binding strap (21), and a second binding strap (22). The clamping shell (24) is disposed on the top side of the optical fiber (5). The fixing seat (23) is fixedly connected to the top side of the clamping shell (24). The first binding strap (21) is fixedly connected to the side surface of the fixing seat (23), and the second binding strap (22) is fixedly connected to the other side surface of the fixing seat (23).
4. The distributed fiber optic vibration sensing apparatus of claim 3, wherein, The inner wall of the clamping shell (24) is provided with a plurality of anti-slip strips (27), which are evenly distributed on the inner wall of the clamping shell (24) and are attached to the surface of the optical fiber (5).
5. The distributed fiber optic vibration sensing apparatus of claim 3, wherein, The top surface of the compression shell (24) is fixedly connected with multiple limiting frames (26). The multiple limiting frames (26) are symmetrically distributed about the fixing seat (23). A first restraining strap (21) and a second restraining strap (22) pass through the inner cavity of the limiting frame (26).
6. The distributed fiber optic vibration sensing apparatus of claim 3, wherein, The outer surface of the end of the first binding strap (21) is provided with a male hook and loop fastener, and the inner side of the end of the second binding strap (22) is provided with a female hook and loop fastener, and the male hook and loop fastener are bonded together.
7. The distributed fiber optic vibration sensing apparatus of claim 3, wherein, The first binding band (21) and the second binding band (22) are attached to the surface of the pipe (1) in the fixed optical fiber (5).
8. The distributed optical fiber vibration measurement device according to claim 3, characterized in that, The surface of the compression shell (24) is provided with a plurality of through holes (25), and the plurality of through holes (25) are evenly distributed on the surface of the compression shell (24).
9. The distributed optical fiber vibration measurement device according to claim 3, characterized in that, The clamping shell (24) is fixedly connected to the bottom sides of its two ends with a limiting plate (4). The limiting plate (4) is installed at equal intervals on the bottom side of the same end of the clamping shell (24). The bottom end of the limiting plate (4) is engaged with the slot (31) opened on the surface of the limiting seat (3).
10. The distributed optical fiber vibration measurement device according to claim 1, characterized in that, The bottom side of the optical fiber (5) is attached to the top surface of the pipe (1), and limited seats (3) are symmetrically arranged on both sides of the optical fiber (5).